# Autoenv for Zsh
-zsh-autoenv automatically sources `.env` files, typically used in project
-root directories.
+zsh-autoenv automatically sources (known/whitelisted) `.autoenv.zsh` files,
+typically used in project root directories.
It handles "enter" and leave" events, nesting, and stashing of
variables (overwriting and restoring).
## Features
- Support for enter and leave events, which can use the same file.
- By default `.env` is used for entering, and `.env_leave` for leaving.
- - Asks for confirmation / authentication before sourcing a `.env` file, and
- remembers whitelisted files by its hash.
+ By default `.autoenv.zsh` is used for entering, and `.autoenv_leave.zsh`
+ for leaving.
+ - Interactively asks for confirmation / authentication before sourcing an
+ unknown `.autoenv.zsh` file, and remembers whitelisted files by their
+ hashed content.
- Test suite.
- Written in Zsh.
### Variable stashing
-You can use `autostash` in your `.env` files to overwrite some variable, e.g.
-`$PATH`. When leaving the directory, it will be automatically restored.
+You can use `autostash` in your `.autoenv.zsh` files to overwrite some
+variable, e.g. `$PATH`. When leaving the directory, it will be automatically
+restored.
- % echo 'echo ENTERED; autostash FOO=changed' > project/.env
+ % echo 'echo ENTERED; autostash FOO=changed' > project/.autoenv.zsh
% FOO=orig
% cd project
Attempting to load unauthorized env file!
- -rw-rw-r-- 1 user user 36 Mai 6 20:38 /tmp/project/.env
+ -rw-rw-r-- 1 user user 36 Mai 6 20:38 /tmp/project/.autoenv.zsh
**********************************************
The varstash library has been taken from smartcd, and was optimized for Zsh.
-## Writing your .env file
+## Writing your .autoenv.zsh file
### `autoenv_source_parent()`
-zsh-autoenv will stop looking for `.env` files after the first one has been
-found. But you can use the function `autoenv_source_parent` to source a
-parent `.env` file from there.
+zsh-autoenv will stop looking for `.autoenv.zsh` files upwards after the first
+one has been found, but you can use the function `autoenv_source_parent` to
+source the next `.autoenv.zsh` file upwards the directory tree from there.
+The function accepts an optional argument, which allows to stop looking before
+the file system root is reached:
+
+```zsh
+autoenv_source_parent ../..
+```
## Installation
zgen load Tarrasch/zsh-autoenv
+### Using [zplug](https://github.com/zplug/zplug)
+
+Add the following to your `.zshrc` where you are loading your plugins:
+
+ zplug "Tarrasch/zsh-autoenv"
## Configuration
### AUTOENV\_FILE\_ENTER
Name of the file to look for when entering directories.
-Default: `.env`
+Default: `.autoenv.zsh`
### AUTOENV\_FILE\_LEAVE
Name of the file to look for when leaving directories.
Requires `AUTOENV_HANDLE_LEAVE=1`.
-Default: `.env_leave`
+Default: `.autoenv_leave.zsh`
### AUTOENV\_LOOK\_UPWARDS
-Look for .env files in parent dirs?
+Look for zsh-autoenv "enter" files in parent dirs?
Default: `1`
Default: 0
-### `AUTOENV_DEBUG`
+### AUTOENV\_DEBUG
Enable debugging. Multiple levels are supported (max 2).
Default: `0`
+## Recipes
+
+### Automatically activate Python virtualenvs
+
+Given `AUTOENV_FILE_ENTER=.autoenv.zsh`, `AUTOENV_FILE_LEAVE=.autoenv.zsh` and
+`AUTOENV_HANDLE_LEAVE=1` the following script will activate Python virtualenvs
+automatically in all subdirectories (`.venv` directories get used by
+[pipenv](https://github.com/kennethreitz/pipenv) with
+`PIPENV_VENV_IN_PROJECT=1`):
+
+```zsh
+# Environment file for all projects.
+# - (de)activates Python virtualenvs (.venv) from pipenv
+
+if [[ $autoenv_event == 'enter' ]]; then
+ autoenv_source_parent
+
+ _my_autoenv_venv_chpwd() {
+ if [[ -z "$_ZSH_ACTIVATED_VIRTUALENV" && -n "$VIRTUAL_ENV" ]]; then
+ return
+ fi
+
+ setopt localoptions extendedglob
+ local -a venv
+ venv=(./(../)#.venv(NY1:A))
+
+ if [[ -n "$_ZSH_ACTIVATED_VIRTUALENV" ]]; then
+ if ! (( $#venv )) || [[ "$_ZSH_ACTIVATED_VIRTUALENV" != "$venv[1]" ]]; then
+ echo "De-activating virtualenv: $VIRTUAL_ENV" >&2
+ deactivate
+ unset _ZSH_ACTIVATED_VIRTUALENV
+ fi
+ fi
+
+ if [[ -z "$VIRTUAL_ENV" ]]; then
+ if (( $#venv )); then
+ echo "Activating virtualenv: $venv" >&2
+ source $venv[1]/bin/activate
+ _ZSH_ACTIVATED_VIRTUALENV="$venv[1]"
+ fi
+ fi
+ }
+ autoload -U add-zsh-hook
+ add-zsh-hook chpwd _my_autoenv_venv_chpwd
+ _my_autoenv_venv_chpwd
+else
+ add-zsh-hook -d chpwd _my_autoenv_venv_chpwd
+fi
+```
## Related projects
+- https://github.com/direnv/direnv
- https://github.com/cxreg/smartcd
- https://github.com/kennethreitz/autoenv